Suzy Favor Hamilton was such a Midwestern sports icon the Big Ten’s female athlete of the year award is named for the former Wisconsin runner.

That image is in stunning contrast with Hamilton’s admission that she has spent parts of the last year as a $600-per-hour call girl.

In a story first reported by thesmokinggun.com and on her Twitter feed, Hamilton took full responsibility for what she called “a huge mistake.” On @favorhamilton, she said depression had contributed to her decision to work for a Las Vegas-based escort service.

The Smoking Gun story recounts how Hamilton, a three-time Olympian, nine-time NCAA champion and three-time Big Ten female athlete of the year, was leading a dual life: Mother, wife, motivational speaker, sponsor representative and realtor based in Madison, Wis.; call girl in Las Vegas, Chicago, Los Angeles, Houston and other cities.

“I do not expect people to understand, but the reasons for doing this made sense to me at the time and were very much related to depression,” Hamilton tweeted Thursday.

“I cannot emphasize enough how sorry I am to anyone I have hurt as a result of my actions and greatly appreciate the support from family and those closest to me. I fully intend to make amends and get back to being a good mother, wife, daughter, and friend.”

Known as “Kelly” on the website of the escort service for which she worked since last December, Hamilton told the Smoking Gun she suspected a client revealed who she was despite efforts that often seemed half-hearted to protect her identity. According to Smoking Gun, one of her escort service clients offered a reporter money to prevent the story from getting out.

The 44-year-old Hamilton, who grew up in Stevens Point, Wis., once was the glamour girl of track and field. The escort service’s website advertised her in a variety of revealing photographs with her back to the camera or her face blurred.

Hamilton said in the story her husband, Mark, knew of her escort work and tried vainly to get her to stop.

“I realize I have made highly irrational choices and I take full responsibility for them,” Hamilton tweeted. “I am not a victim here and knew what I was doing.

“I was drawn to escorting in large part because it provided many coping mechanisms for me when I was going through a very challenging time with my marriage and my life. It provided an escape from a life that I was struggling in. It was a double life.”

Until now, the most dramatic public moment of Hamilton’s life was her tumble to the track with 70 meters to go in the 1,500-meter final at the 2000 Olympics in Sydney. She had led with 130 meters left but wound up walking to the finish and left the stadium in a wheelchair.

At the time, she attributed the fall to dehydration from medicine she was taking for a hamstring injury. A year later, Hamilton said she fell on purpose after a panic attack caused by self-imposed pressure to win for her brother, who had committed suicide in 1999.

Thursday’s startling revelations already have cost her one commercial deal.

The Rock ‘n’ Roll Marathon Series said it was ending its relationship with Hamilton. That deal began in 2011 and called for her to appear at “four or five” events per year as part of its “running legends" program, according to spokesman Dan Cruz of The Competitor Group, which owns the series.

In a statement, The Competitor Group said: “We are shocked, embarrassed and deeply saddened by the recent reports that Suzy Favor Hamilton lived a double life as an escort. Admittedly this was a part of a secret life that she did not share with those, like us, that she worked with in her capacity as a former world-class athlete.”

Hamilton had a long sponsorship deal with Nike and has done appearances at Disney World and for The Wisconsin Potato & Vegetable Growers Association.

"We regret having learned about this today," said Duane Maatz, executive director of the Wisconsin agricultural group. "We hope she finds some stability in her life. We will be evaluating our relationship with her."

A Nike representative said the company no longer has a relationship with Hamilton.

A Disney World spokesperson said Hamilton had not been paid by the company for appearing at a Disney running event in Orlando last February. Disney has cancelled Hamilton's appearance at a Disney running event in Anaheim next August.

Asked about the future of the Suzy Hamilton Athlete of the Year Award, Big Ten spokesman Scott Chipman said, "At this time, we have no comment."

Hamilton long had capitalized on her good looks, which got her national ads with several companies.

In 1997, she did a Suzy Favor Hamilton calendar with a cover that had pictures of her in both running gear and a bikini. There were other photographs of her in skimpy attire inside the calendar.

She was the most decorated athlete in NCAA track and field history. In 2007, the organization honored Hamilton as its outstanding female track and field student-athlete of the quarter-century since women’s college sports fell under NCAA purview.

After her college career ended in 1990, she was less successful as a runner. Hamilton still has four of the 10 fastest U.S. times in the 1,500, but she advanced past the first round in just one of her three Olympic appearances and did not make the final in either of her two world meets.

Throughout her running career, Hamilton battled a series of psychological issues. In an interview with the Milwaukee Journal Sentinel last summer, she talked about dealing with anxiety, self-doubt, eating disorders and, eventually, post-partum depression after the birth of her daughter, now 7.

Sydney wasn’t Hamilton’s first panic attack, just the most dramatic.

“In some ways, I’m glad it happened,” she said in 2001. “That’s when I realized I had to get help.”